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Finding the Fourth Proportional to 534,995.61, 738,346.76 and 305,587.20

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Solution

The fourth proportional to 534,995.61, 738,346.76 and 305,587.20 is: 421,740.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,995.61 : 738,346.76 = 305,587.20 : x
  2. Step 2: Convert to fraction form
    534,995.61/738,346.76 = 305,587.20/x
  3. Step 3: Cross multiply
    534,995.61x = 738,346.76 × 305,587.20
  4. Step 4: Simplify right side
    534,995.61x = 225,629,321,404.29
  5. Step 5: Solve for x
    x = 225,629,321,404.29/534,995.61
  6. Step 6: Final answer
    x = 421,740.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.